tdf#115007 svl: clean-up "add NatNum12 number format list items"

As suggested by Eike Rathke:

– call getCurrBankSymbol() via rLoc();

- remove CCC support with NatNum12:

"This old CCC automatic format code never was used with
NatNum12 and shouldn't be introduced, it also isn't
offered in the number format dialog if a legacy document
doesn't already use it."

Follow-up to commit 2a1d2d42af7f365330479f4032ddfdd9eeba7c1d
"tdf#115007 add NatNum12 number format list items, fix title case".

Change-Id: Ia298d62221b1ce220724bdd7cfe627913ee1afc0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/142269
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>
diff --git a/svl/source/numbers/zformat.cxx b/svl/source/numbers/zformat.cxx
index 54f3ce6..dfe5f16 100644
--- a/svl/source/numbers/zformat.cxx
+++ b/svl/source/numbers/zformat.cxx
@@ -966,10 +966,7 @@ SvNumberformat::SvNumberformat(OUString& rString,
                                sParams = "cardinal"; // default NatNum12 format is "cardinal"
                            else if (sParams.indexOf("CURRENCY") >= 0)
                                sParams = sParams.replaceAll("CURRENCY",
                                    GetFormatter().GetLocaleData()->getCurrBankSymbol());
                            // compatible (old) currency format
                            else if (sParams.indexOf("CCC") >= 0)
                                sParams = sParams.replaceAll("CCC", rScan.GetCurAbbrev());
                                    rLoc().getCurrBankSymbol());
                            NumFor[nIndex].SetNatNumParams(sParams);
                            sStr += " " + sParams;
                        }